Inflation has been rising on the back of higher housing costs for American households over the past few months, and the recent jump in the main reading of such shelter costs isn’t a blip, according to researchers Randal Verbrugge and Amy Higgins of the Federal Reserve Bank of Cleveland.

The consumer-price index, which is a leading arbiter of overall U.S. inflation, hasn’t included home prices since 1983. Instead, the Labor Department calculates “owners’ equivalent rent” to measure shelter’s impact on inflation. It blends actual rents with what homeowners might fetch for their homes if they were rented. OER makes up about a quarter of the consumer-price index.